Bosch LBC 3428 / 00 horn speaker is specially designed to

 achieve excellent sound reproduction in marine applications and other industrial environments. It is durable, waterproof and dustproof, and can effectively prevent the corrosion of seawater and most industrial environments. In addition, it is suitable for both fixed and mobile systems, and has strong power and good sound performance. Therefore, it is an ideal choice for ordinary commercial and industrial applications. Basic function the horn speaker is made of glass reinforced polyester (GRP) material with UV resistance. This kind of high strength refractory and anti-corrosion material has excellent reliability and greatly reduces the maintenance cost. In addition, GRP has excellent anti thermal and chemical properties in various applications. The horn speaker is weatherproof, and the stainless steel mounting bracket with cover screw is integrated to further improve the corrosion resistance. They are equipped with two 20 mm plug inlets (one plug is standard) for loop connections. Certificate and accreditation all Bosch loudspeakers meet IEC 268-5 power amplifier capability (PHC) standard and can operate continuously for 100 hours at rated power. In addition, Bosch has conducted simulated acoustic feedback exposure (SAFE) tests to ensure that they can withstand twice the rated power in a short period of time. This ensures higher reliability of loudspeakers in extreme conditions, improves customer satisfaction, extends service life, and significantly reduces the probability of failure or performance degradation. Safety in accordance with en 60065, waterproof and dustproof in accordance with IEC 60529, IP 66 and IP 67 regional certification European CE installation / configuration horn speaker built-in transformer, jumper on primary winding can be used for different power settings. Horn loudspeakers are equipped with strong mounting brackets to allow sound to travel in the right direction. The bracket is equipped with ratchet device to ensure correct positioning. Dimensions (mm [in]) transformer jumper power universal phase 15 W 1 215.023 7.534 5.01 13 4.0 24 2.0 140.8 circuit diagram frequency response directivity pattern (measured with pink noise) 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz SPL 1.1 - 79 96 10 2 10 5 98 87 SPL (max) - 91 108 11 4 11 7 10 99 Q value - 1.51.9 3.2 6.8 15.8 51.3 efficiency - 0.072.7 6.2 5.9 0.50.1 horizontal angle - 360 360 160 90 55 25 vertical angle - 360 360 160 90 55 25 per octave number of accessories assembly 1 LBC 3428 / 00 horn speaker 1 cable gland technical specifications electrical specifications * maximum power 22.5 w rated power 15 / 7.5 / 5 / 4 / 2 / 0.8 w sound pressure level 15 W / 1 W (1 kHz, 1 m) 114 dB / 102 dB (SPL) effective frequency range (- 10 dB) 380 Hz to 5.5 kHz open angle 1 kHz / 4 kHz (- 6 dB) 160 ° / 55 ° rated voltage 100 V rated impedance 667 ohm connector screw terminal box * technical performance data in accordance with IEC 60268-5 standard mechanical specifications dimensions (length x diameter [maximum]) 245 x 163 mm (9.6 x 6.4 in.) weight 2.6 kg (5.72 LB) color light gray (RAL 7035) cable diameter 8 mm to 12 mm (0.31 inch to 0.47 inch)

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